This Leetcode problem Swap Salary LeetCode Solution is done in SQL.

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Swap Salary LeetCode Solution

Problem Statement

id is the primary key (column with unique values) for this table. The sex column is ENUM (category) value of type (‘m’, ‘f’). The table contains information about an employee.

Write a solution to swap all 'f' and 'm' values (i.e., change all 'f' values to 'm' and vice versa) with a single update statement and no intermediate temporary tables.

Note that you must write a single update statement, do not write any select statement for this problem.

The result format is in the following example.

Example 1:
Input:

Output:

Explanation:
(1, A) and (3, C) were changed from ‘m’ to ‘f’.
(2, B) and (4, D) were changed from ‘f’ to ‘m’.

Swap Salary LeetCode Solution MySQL

# update salary
# set sex = case when sex = 'm' then 'f' else 'm' end;
update 
  salary 
set 
  sex = if(sex = 'm', 'f', 'm');Code language: SQL (Structured Query Language) (sql)